The Panasonic Lumix G Leica DG Summilux 15mm f/1.7 Lens sports an internal focusing system and stepping motor for quiet and smooth autofocus. This, combined with a fast f/1.7 aperture for low-light shootings, makes this lens great for both photography and videography applications. It is wide enough for everyday shooting without being so wide as to produce distortion. The metal barrel gives this lens a professional feel. It is ideal for event and street shooting.